code: def __init__(self, metapath, add_self_loops=True, **kwargs):
      super(GCNDataFlow, self).__init__(
          num_hops=len(metapath), add_self_loops=add_self_loops
      )
      self.metapath = metapath
  
file_path: euler/tf_euler/python/dataflow/gcn_dataflow.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import tensorflow
  import tf_euler
  from tf_euler.python.dataflow.neighbor_dataflow import UniqueDataFlow
label_desc: Use image node_id 1 to create a new GCNDataFlow object from inherited base classes: UniqueDataFlow with example: obj = GCNDataFlow(metapath, add__loops)